Favicon to PNG

The site looks like nothing more than a directory filled with icons in PNG format, but it actually uses an Apache directive to make sure that every file served is sent back with the image/png mimetype, and the HTTP 404 error page points to a script:

ErrorDocument404 /.downloader/404.php
ForceType image/png

404.php page actually downloads the favicon from a remote site and converts it to PNG format.

I’ve removed the out-of-date code from here, you can get the latest code over on GitHub